rowland



2 Sheets--Sheet 1.

(No Model.)

J. H. ROWLAND.

MITER BOARD.

Patented Apr. 8

1w. norms PETERS 2a., PNGYB-LITHO., wAsmma 2 Sheets-Sheet 2.

(No Model.) 7

J. H. ROWLAND.

MITER BOARD.

Patented Apr. 8, 1890.

j' ZZ'";

UNITED STATES PATENT OFF-ion.

JOHN HENRY ROWLAND, OF CARLTON, NEAR ll/IELBOURNE, VICTORIA.

M lTER-BOARD.

SPECIFICATION forming part of Letters Patent No. 425,051, dated April 8,1390.

Application filed August 12,1889. Serial No. 320,541 (No model.)

To ail whom it may concern:

Be it known that I, JOHN HENRY Row- LAND, stair-builder, a subject ofthe Queen of Great Britain, residing at 152 Pelham Street,

Carlton, near Melbourne, in the British Colony of Victoria, haveinvented new and useful Improvements in Miter-l3oards, of which thefollowing is a specification.

This invention relates to that class of miter-boards for which Iobtained United States Letters Patent No. 146,403, dated the 13th day ofJanuary, 1874, wherein provision is made for cutting either vertical orhorizontal miters, as well as combined Vertical and horizontal miters,or splayed miters, as they are usually called.

The object of this invention is to produce a miter-board of this classwhich will offer increased facilities for cutting a wider range ofmiters than has been the case with miterboards hitherto.

It consists in certain structural features and combinations of parts orelements, as hereinafter fully described, and as illustrated in theaccompanying drawings, wherein- Figure 1 is a front elevation, Fig. 2 aplan, and Fig. 3 a side elevation, of a miter-board embodying my presentimprovements.

As in the former case, the two parts A A of the base of the board arehinged together at a, for instance, and are provided with a pair ofguide-bars B B, which are pivoted at 1) upon the upper face of themovable part i A in such a manner that they serve to 35 hold the work,as ordinarily, at the angle at which it is desired to cut the miter. Agraduated quadrant b is let into the said movable part of the base andserves to indicate the angle at which the said guide-bars B are set, andthey may be secured at such angle by clamps b passing through slots b insaid guidebars, as shown, and each having a thumb screw 1)", arranged tobear firmly against the under side of the base of the miterboard, asshown. The two parts A A of this base may be secured at any requiredangle one with the other by means of the set-screws a a, which passthrough downwardly-extending brackets a secured to the fixed part A ofthe said base, and through slots cut in the quadrant of. This quadrantis graduated, as

illustrated in Fig. 3, in order to facilitate the adjustment of themovable part A of the base to the required angle, and, moreover, it isso arranged as not to project above the upper surface of said movablepart, so that it will not interfere with the work laid thereupon. Thesaw-guide O is supported from a split sleeve 0, encircling a verticalpost or standard c and arranged to be clamped firmly therearound bymeans of the thumb-screw 0 passing through lugs 0 formed on said sleeve.A clamp D is arranged toslide up and down a standard (1, secured to themovable part A of the base of the miter-board, and this clamp isprovided with a pair of sliding blocks d, which can be pressed firmlydown upon the work by means of the thumb-nut (1 upon said standard d.

In order to clamp the work firmly against the guide-bars B B, I provideeccentric clamps E, which can be inserted in holes 0, made for thepurpose in the movable part A of the base, as illustrated in Fig. 2.

Having now particularly described and ascertained the nature of myinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a miter-board, the combination, with the base orboard and the adjustable guidebars B, of a standard, a clamping-baradjustable on the standard, and clamping blocks or shoes adjustablelongitudinally of the clamp ing-bar on opposite sides of the standard,for the purposes specified.

2. In a miterboard, the combination, with the base or board formed intwo parts adjust able relatively to one another, and adj ustableguide-bars B on one of said parts, of a standard arranged between theguide-bars, a. clamping-bar adjustable on the standard, and clampingblocks or shoes adjustable longitudinally of the clamping-bar onopposite sides of the standard, for the purposes specified.

3. In amiterboard, the combination, with the base, the adjustable barsB, and the adjustable clamping.- bar D, of the eccentric clamps E,adjustable relatively to the bars B, substantially as and for thepurposes specified.

4:. In a miter-board the base or table of which is constructed of twosectione hinged through the slot of the quadrant for locking together,the combination,with the section A, the same to said leg, substantiallyas dethe guide-bars B, adj ustably connected therescribed.

- With,the Vertically-movable clampingbar 1), JOHN HENRY RO\VLAND.

havin clamping-shoes (Z', adjustable thereon, \Vitnesscs: and thequadrant a, of the section A, pro- 'WILLIAM HENRY CUBLEY,

Vided with a leg a and a set-screwextending \VALTER SM'YTHE BAYSTON.

